Connect to the CPC3 via RustDesk.
Click on the lightning bolt at the top of the bar and select Transfer file.
Click once on the backup folder so that it is highlighted.
Select the storage location for the copy on the left-hand side and click on Receive.
Note:
If you want to provide us with a backup, the backed up folder must be zipped.
To do this, right-click on the folder -> Send to -> ZIP-compressed folder